YEJMKJ 10Pack Nema 17 Stepper Motor 2 Phase 1.8‌°‌ 0.47Nm(66.56oz·in) High Torque Bipolar 38mm 1.7A 1.7Ω 4-Lead Shaft 24mm φ5mm 42 Stepper Motor Cable 1M for 3D Printer DIY Robot CNC Machine

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상품 특징

• Characteristics: Nema 17 Stepper Motor 2 Phase, Step angle 1.8‌ Degree (200 steps/rev), Holding torque 0.47Nm (66.56oz·in), Rated current 1.7A, Resistance 1.7Ω, Inductance 3.5mH±20%, Rotor inertia approx 60g.cm².
• Size Specifications: Nema 17 Stepper Motor dimensional parameters are as follows. Body size 42x42x37.5mm(1.66x1.66x1.48in), Shaft length 24±0.5mm, Shaft diameter φ5mm, D-cut length 24mm, Installation hole distance 31mm, Cable 1m, 4-Lead Black (A+) Green (A-) Red (B+) Blue (B-), Weight 291g.
• Safety Specifications: This Nema17 Step Motor operates safely and reliably. Here are its key safety parameters: Dielectric strength 500V A.C 1 MINUTE; Operation ambient temperature -20℃ ～+50℃ [-4°F～122°F]; Operation ambient humidity 15%RH～95%RH; Insulation resistance 100MΩ MIN; Insulation class(UL) B (130℃) [266°F]; Temperature rise 80K MAX.
• Exceptionally Quiet Powerhouse: Built with advanced steel cores and precisely tuned windings, this Nema 17 Step Motor generates up to 20% stronger holding torque while significantly reducing noise output. Achieve smoother machine motion and lower acoustic impact.
• Key Details: With higher speeds, torque decreases. The ideal range for operation is 0–600 RPM, and up to 1800 RPM for closed-loop systems. Lower current results in reduced torque and temperature rise, while lower voltage reduces torque (recommended: 12–24V DC). Commonly used in 3D printers, DIY robots, CNC machines, and other automated systems, the 42mm Stepper Motor is compact yet provides high torque for heavy-duty tasks.

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